Researchers from Keyfactor found that IoT devices have alarmingly weak RSA keys. Poor randomness can result in RSA keys sharing the same factors, and therein lies the problem. With a private key, an attacker can conduct man-in-the-middle attacks, decrypting or meddling with data. The problem largely centers around internet of things devices that cant generate enough entropy, or random input, when generating prime numbers. The latest results put the onus on device manufacturers to ensure devices are secure by gathering enough entropy.”]
Source: https://www.govinfosecurity.com/study-iot-devices-have-alarmingly-weak-rsa-keys-a-13510